Pedal accelerator for automobiles



E. H. ELLISON.

PEDAL-ACCELERATOR FOR AUTOMOBILES.

-APPLICATION HLED JULY 23,1920.

Patented M i; 1922.-

2 SHE'ETSSHEETII' nuantdz V BL ELLISON. PEDAL-ACCELERATOR FORAUTOMOBILES.

APPLICATION FILED JULY 23, I920- 1,40 8,572. 7 Patented Mar.7 1922.

UNITED STATES PATENT 1 OFFICE, j

" i nnwnnn H. nnrirson, or JAMESTOWN, new Yonx.

. PEDAL Aconnnneronroa AUTOMOBILES,

Application filed July 23,

5 To all who m 2'2? may concern:

'Be it known thatli Ennnnn l-l iELLrsoN, a citizen of the United States,residing at the city of Jamestown, in the county, of Chautauqua andState of New 'Yorkfhave inyented certain new; and useful Improve mentsin Pedal Accelerators for Antoine-J biles, of which the'iollowingptakenin connectionwith the accompanying drawings, is a specification. r

[The invention relates to" footer pedal accelerators as especiallyadapted :for application to'internal combustion en'gines in automobilesof the Ford type, the present invention being an improvement upon theaccelerator construction shown in my Letters Patent, No. 136137-fl,dated Dec. 7, 1920; and the object ofthis improvement is first, toprovide aitwo piece pedal or foot actuating lever with an'adjnstablejoint between theparts thereof which will give positiveholding power to the foot contacting portion of the pedal with a widearea as to adjustment by means of a fan-shaped'corrngated or toothedportion whichintermeshes with similar corrrigations or teeth ontheopposite portion, oneof said portions being slotted to receive one ofthe screw bolts so that wheng'bolted firmly in the adj nsted position,the joint is absolutely rigid; and second, to provide certainsimplifications oi the arm, link and bell crank connections whichstrengthen the construction, and at the same time renderthe action moreaccurate and positive; and the invention consists in'the novel featuresand combinat'gns hereinafter set forth and claimed. j V 'In thedrawings, Figure l is a'perspective View of the accelerator mechanismattached to the engine showing the improved construction and arrangementoi the same. Figures2 and 2 show a detail perspective view andelevation. of an adjustable rod end mechanism. Fig. 3 is a' perspectiveview oit' the two-piece pedal showing 'thecorrugated joint between thetwo parts thereof one of the parts being'broken away at said joint tobetter reveal the same; and Fig. 4 is a sectional View or the corrugatedportions of the joint with the main portions of both the parts brokenaway. Figs, 5 and '5' show side and edgewise elevations of the bracketplate for the bell crank lever. top plan view of theacceleratormechanism attached to the engine, a portion of the enginebeing broken away to show the connect- Specification of Letters Patent.

Fig. 6 is a 1 Patentedhflar. 7, 1922. 192a; Serial No. 398,382. 2 I i ii i ing'i od" to the carburetor actuating lever, and also from the bellcrank lever to the steerlng column, Figs, 7 and 7* show detail sideelevations of the joint between the link,

connection and the carbnreter actuatin lever. F1 gs. 8 and9showditferent position: of the end joint in the bell crank end of thehnl; to the pedal actuating arm; and Fig. 10 1s side elevation of saidlinlrztnrned opposlt ely to the manner in which, it is shown n 1g 1 toshow the adaptation of said link to eng nesoi (.hfierent heights.

Lilzefcharacters of reference refer to correspond ng, partsin theseveral views. 1 a.

The nnmer al l5 designates the; two-piece pedalithetwo parts beingdesignated by the nuiner'als lGand 17 which the corrugated lap joint l8,the adjacent faces of the interlapping parts being simie larlycorrugated.

of the end part 20 oi part 1? fits in said 0017- rugations' of thefan-shaped part 19 at different angles of adjustment, two screws 21 and22 being provided-to attachthe two parts, the fan-shaped portion 19having a slot23 to adj nstably receive the screw bolt 22 thereby makinga rigid joint having awide ad nstmentwhich can be quickly and'easilvattained by loosening the bolts sufficiently to turn the toothed orcorrugated portions upon one another toIthe This ar angement permitsthequick removal of the )w at said lap joint to thereby disconnecttheportionldoi? the-pedal 15 from the portion 17 to allow the removal ofthe iioor'board 241 without ,distnrbingrthe adjust ment. of any oftheotherparts of the 210-; celerator mechanism. i

The part 16 has the knurled or rubber surfaced 'footflrest 25 which ispivotally said foot rest. The hinged footrest 25 has the two stops 27and 28ytherefor on the part 16, said foot rest 25 beingbalanced tonormally fall backfnpon the stop 28 by gravityso that it is always inreadiness for instant use, the foot pressing upon said foot rest 25radially at different angles are provided with The end portion 19 of oneofthe parts desired adjustment.

7 curve.

according to the position of the chantjt'eur in relation to the same.This arrangement permits the user to move the lever with absoluteexactness of foot pressure upon the same in accelerating the engine. llthe toot rest centers radially uponthe pin 26 and the periphery of thefoot rest 25 curves in exact radial line, the foot of the user willobtain a purchase upon said foot rest that it would not otherwise findit said outer periphery were at any other In this perfect circumference,the foot rest 25 moves from the normal non-accelcrating position to thefull limit of acceleration ot' the engine with a graduated pressureexactly in accord with the users intention. I

The lever part 17 is connected to, the shaft 29, which shaft isrotatably mounted in the bracket 30. The bracket 30 is designed to fitonto and be adjusted by the spaced bolts Bil upo the engine head plate32, which is common to all Ford engines. The bolts iii are always in thesame position so that little skill is reqi'lired in attaching this partof the accelerator mechanism to the engine since it cannot be installedotherwise than correctly in place upon said bolts 31,. The part 17 01the pedal 15 is provided with the stops 32:} and 34: which limit themovement of the pedal 15 in both directions, that is, to the completeclosure and full actuation of the carbureter and relieves the carbureterand accelerator mechanism of all strain.

The shaft 29 is extended suliiciently to one side for the attachment ofthe'downwardly extending arm 35. A link 36, pref erably flat, isattached to the lower end of the arm .35 at one end and to the bellcrank lever 37 at the other. The attachment of the arm 35' to the link86 renders the arm and link adaptable to different heights oil enginesby turning the end 41-2 in a return bend and Pl'OVltlll'lg' a holethrough each of the parts so that said link fit) is reversible, beingshown in Fig. 11. one side 'up and in Fig. 11.0 with the other side up.The lower end of? the arm 35 is preferably attached with a coil take-upspring 43 and cotter pin for quick and noiseless attachment, the spring43 acting as a constant take-up, that is, holding the arm 35 and link 36under tension without rattle, yet permitting the free action of thesame. 7

The bell crank lever 37 is pivotally attached to the bracket plate 38,which bracket plate 38 is attached to the engine 32 by means of thescrew bolt 39, the two screw bolts '39 and 450 being regularattachingbolts for the engine parts in order to hold,

39 being sutlicient to hold said plate firmly attached to the engine.The link 36 is attached to the bell crank lever 37 by means of a wingednut or pin 44. The hole in the end of the link 36 is made the same shapeas said winged nut or pin so that said link may he slipped over the sameand then turned into the locking position as shown in. Figs. 8 and 9,which brings it into alinement with the arm 35 for attachment there to,thereby making a quick and firm looking attachment for said link 36 tothe bell crank lever 37.

The opposite arm'ot' the bell crank lever 37 is pivotally connected tothe oarbureter actuating arm or lever 46 by means of the link 47, whichlink or rod L7 is turned at right angles and extends down through a holein the end of the arm of the bell'crank lever 37 and is turned to oneside slightly into alinement with the carbureter actuating lever l6 andadjustably extends its threaded end through the threaded sleeve of thepin 48 so that said link 47 can be adjusted to actuate the carbureter 49as desired;

A link 50 encircles the angular end of the link 47 where it extendsthrough the arm of the bell crank lever 37 in order to attain a strongand economical pivotal at tachment tor the end of the link 50, the otherend extending through a sleeve 51 which is pivotally attached toan arm52 on the steering column operating or throttle rod 53. The end of thelink 50, after passing through the hinging sleeve 51, is

threaded and has the U-shaped threaded nut 5t thereon and the cotter pin55, as shown in detail in Fig. 2, thereby giving a quick and accurateadjustment for the length of the link rod 50.

In order to attain a constant tension on the parts and particularly onthe pedal if), an arm is attached on the shaft 29 to be actuatedthereby, and has the coiltension spring-5 7 adjustably attached in oneoi: the

holes 58 according to the l'evera and conseqnent strength of: tensiondesired; the other end being attached through the hole 5%) in. thebracket plate 2:38 immediately beneath the end portion of the arm 56.This gives a constant spring tension upon all the parts, ensuring theaccurate actuation of the carbureter actuating lever 46. The spring 57serves to raise the lever 15 and, also brings the accelerator mechanismback to normal idling position whenever toot pressure is removed fromthe pedahthe spring 57 holding against the stop. 34 in attaining thetension on all ofthe usual parts of the accelerator mechanism,preventing all, rattling when in saidnormal idling position. Theconnection to the-operating rod 53ot the steering colunin permitstheoperation of the hand lever on the steering column so that it is not inany way interfered with, retaining any position as adjusted by thedriver of the vehicle.

The opening through the engine is narrow and in this confined spacethere is room for only a single rod d7 to work t'rccly without hindrancefrom the parts of the engine as the bell crank 37 actuates thecarburetor arm 4L6. The single rod 47'is plain and smooth without anysleeves or other parts thereon and passes through the engine withoutcatching on any of its parts. The link rod 50 as well as rod 17 has theadjustably threaded ends 54: and 48 so that the length of the two rods50- and d7 may be adjusted as desired so as to open or close thecarbureter 49 and obtain the desired amount of gas.

What is claimed is:

1. In an accelerator construction for motor vehicles, a rock shaft, apedal connected thereto, an arm also connected to the rock shaft, athrottle element, and means connecting the armto the throttle elementand including a reversible member having spaced parts each of which isformed for selective attachment 'to the arm so as to accommodate enginesof varying heights.

2. In anaccelerator construction for motor vehicles, a rock shaft, apedal connected thereto, an arm also connectedto the rock shaft, athrottle element, and means connecting the arm to the throttle elementand in.-'

eluding a member having spaced parts each oi. which is formed forselective attachment to the arm, and also a spring for preventing looseplay between the member and arm in either position of the member.

3. An accelerator pedal consisting of detachably and pivotally connectedsections one of which is formed with a series of con rugations radiatingfrom the pivotal connection. and an arcuate slot, and the other sectionformed to inte mesh with said series,

and means operable in the slot for securing the two sections relativelyfixed.

4-. An accelerator construction "for motor vehicles, comprising a pedal,a rock shaft on which the pedal is fixed, an arm fixed on the shaft, athrottle member, and means connecting the arm to the throttle member andineluding a link having one end portion bent upon itself in spacedrelation to provide relatively superposed portions at said end forselective attachment to the arm.

5. An accelerator construction for motor vehicles, comprising a pedal, arock shaft on which the pedal is fixed, a rocker arm fixed on the shaft,a throttle member, a bracket plate secured between its ends and havingone end formed to laterally engage beneath a clamping nut, a bell cranklever pivoted on the opposite end of said bracket plate, meansconnecting the arms of said bell crank lever respectively to the rockerarm and acontrol member, a second rocker arm fixed on the shaft, and aresilient connection between the outer end of said second rocker arm andthe second end of said bracket plate tending to hold the opposite endofthe latter operatively disposed.

6. An accelerator construction for motor vehicles, comprising a pedal,21 rock shaft on which the pedal is fixed, a rocker arm fixed on theshaft, a throttle member, a bracket support, a lever pivoted on thelatter and having operative connection with the rocker arm and a controlmember, a second rocker arm on said shaft overlying the bracket support,and a spring connected at one end to the latter and to the outer end ofsaid second i.

rocker arm for adjustment lengthwise of the latter. p p

7. An accelerator construction for motor vehicles, comprising a pedal, arock shaft on which the pedal is fixed, an arm fixed on the shaft, athrottle member, means connecting the arm to the throttle member andincluding a link having one end portion bent upon itself in spacedrelation to provide relatively superposed portions at said end forselective attachment to the arm, a lever, and means detachablyconnecting the lever to the opposite end of the link whereby the lattermay be removed and'inverted, and then reconnected to the arm and lever.V

In testimony whereof I have aflixed my signature in the presence of twowitnesses.

, EDWARD H. ELLISON. lVitnesses G. V. Swanson Tr-rno. THoMAs lIAAo.

